good afternoon, i am tori campbell, the oakland police accident is facing a growing list of challenges including facing the possibility of a federal take over, new at noon alex savidge joins us live from opd headquarters, so what is the chief saying about all these problems, alex? >> reporter: at this news couches the chief made it clear he is frustrated by a recent speak in murders and talked about this weekend, a particularly violent one, 5 homicides that happened in the span of 18 hours. there was a news conference this morning here at police headquarters and we learned those killings in particular from this past weekend were not connected but did find out the investigates were targeted, despite the hard work of detectives that have been no arrests and to that end the chief today talked about new ways the department is trying to encourage witnesses to these crimes to come forward and help police. in particularly talked about a new system today are using called nixel, where witnesses to crimes, people with information can text that information to the department. the chief says office